lots of pics!
1. are they free walking or only coming in and out of a hole? if free walking perhaps a nudibranch of some sort. (if nudie can be bad...if just a worm..typically good)
2. kinda looks like a nudibranch (mostly all bad)
3. looks like feather dusters (good)
4. looks like a limpet (good)
5. another worm (not bad but from my reading they can irritate corals) they throw out a 'net' that you see to catch food stuffs
again...all imo.
Go here and see what you think:
http://www.worldwidereefers.com/foru...hiker-id-guide